| 摘要 |
A crane (10) includes a boom (16) and boom pivoting mast (20) connected to a swivel body (12) so as to be pivotable, a boom pivoting winch (30) for pivoting the boom, and a main hoisting winch (34) and auxiliary hoisting winch (36) for hoisting up and hoisting down a hanging load. The main and auxiliary hoisting winches are mounted on the boom (16), while the boom pivoting winch is mounted on the boom pivoting mast (20).
|
